JP2004040237A5 - - Google Patents

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JP2004040237A5
JP2004040237A5 JP2002191133A JP2002191133A JP2004040237A5 JP 2004040237 A5 JP2004040237 A5 JP 2004040237A5 JP 2002191133 A JP2002191133 A JP 2002191133A JP 2002191133 A JP2002191133 A JP 2002191133A JP 2004040237 A5 JP2004040237 A5 JP 2004040237A5
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noise
multiplexed
multiplexing
visible
image processing
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JP2004040237A (en
JP3919613B2 (en
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Priority to US10/600,620 priority patent/US7200242B2/en
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多値画像データにノイズを多重化し、ノイズを多重化した分布による目視可能な付加情報を埋め込む画像処理装置であって、
第１の可視強度でもってノイズを多重化する第１のノイズ多重化手段と、
前記第１の可視強度とは異なる第２の可視強度でもってノイズを多重化する第２のノイズ多重化手段と、
所定の画素領域単位に、前記第１、第２の可視強度のいずれで多重化するかを示す情報を、前記付加情報として入力する入力手段と、
前記付加情報に基づき、多値画像データ中の注目画素領域が、前記第１、第２の可視強度のいずれで多重化すべきかを判定する判定手段と、
該判定手段の判定結果に基づいて、注目画素領域に対し、前記第１、第２のノイズ多重化手段のいずれか一方を選択してノイズ多重化を行わせる制御手段と
を備えることを特徴とする画像処理装置。An image processing apparatus that multiplexes noise in multi-value image data and embeds additional information that can be visually observed by a distribution obtained by multiplexing the noise,
First noise multiplexing means for multiplexing noise with a first visible intensity;
Second noise multiplexing means for multiplexing noise with a second visible intensity different from the first visible intensity;
Input means for inputting, as the additional information, information indicating which of the first and second visible intensities is multiplexed in a predetermined pixel area unit;
Determination means for determining, based on the additional information, whether the pixel region of interest in the multivalued image data should be multiplexed at the first or second visible intensity;
Control means for performing noise multiplexing by selecting one of the first and second noise multiplexing means for the pixel region of interest based on the determination result of the determining means, An image processing apparatus. 前記第１、第２のノイズ多重化手段それぞれは、
注目画素領域のノイズ多重化する対象となる演算ビット領域を、与えられた可視強度に基づいて決定し、決定された演算ビット領域に、乱数によるノイズのビット情報を可逆的な論理演算を行うことで、ノイズを多重化することを特徴とする請求項１に記載の画像処理装置。Each of the first and second noise multiplexing means includes:
Determine the operation bit area to be subjected to noise multiplexing in the pixel area of interest based on the given visible intensity, and perform reversible logical operations on the bit information of the random noise in the determined operation bit area The image processing apparatus according to claim 1, wherein noise is multiplexed. 前記演算ビット領域は、更に、前記所定画素領域のデータを参照して決定することを特徴とする請求項２に記載の画像処理装置。  The image processing apparatus according to claim 2, wherein the calculation bit area is further determined with reference to data of the predetermined pixel area. 前記第１、第２のノイズ多重化手段それぞれは、
注目する画素領域のノイズ多重化する対象となる演算ビット領域を、注目画素領域の近傍領域のデータ及び与えられた可視強度に基づいて決定し、決定された演算ビット領域に、乱数によるノイズのビット情報を可逆的な論理演算を行うことで、ノイズを多重化することを特徴とする請求項１に記載の画像処理装置。Each of the first and second noise multiplexing means includes:
The calculation bit area to be subjected to noise multiplexing of the pixel area of interest is determined based on the data in the vicinity area of the pixel area of interest and the given visible intensity, and a random noise bit is determined in the determined calculation bit area. The image processing apparatus according to claim 1, wherein noise is multiplexed by performing a reversible logical operation on the information. 所定画素領域は単一画素であることを特徴とする請求項１乃至４のいずれか１項に記載の画像処理装置。  The image processing apparatus according to claim 1, wherein the predetermined pixel area is a single pixel. 前記所定画素領域は、所定サイズの画素ブロックであることを特徴とする請求項１乃至４のいずれか１項に記載の画像処理装置。  The image processing apparatus according to claim 1, wherein the predetermined pixel area is a pixel block having a predetermined size. 前記所定画素領域は、ＪＰＥＧ圧縮符号化の際の直交変換によって得られた直流成分であることを特徴とする請求項第１項乃至４のいずれか１項に記載の画像処理装置。  5. The image processing apparatus according to claim 1, wherein the predetermined pixel region is a direct current component obtained by orthogonal transformation at the time of JPEG compression encoding. 前記所定画素領域は、ＪＰＥＧ２０００圧縮符号化の際のウェーブレット変換によって得られた低域成分ブロックであることを特徴とする請求項第１項乃至４のいずれか１項に記載の画像処理装置。  5. The image processing apparatus according to claim 1, wherein the predetermined pixel region is a low-frequency component block obtained by wavelet transform at the time of JPEG2000 compression encoding. ノイズが可逆的に埋め込まれ、目視可能な付加情報が多重化された多値画像データから、前記付加情報を除去する画像処理装置であって、
第１の可視強度でもって多重化されたノイズを除去する第１のノイズ除去手段と、
前記第１の可視強度とは異なる第２の可視強度でもって多重化されたノイズを除去する第２のノイズ除去手段と、
所定の画素領域単位に、前記第１、第２の可視強度のいずれで多重化されたかを示す情報を、前記付加情報として入力する入力手段と、
前記付加情報に基づき、多値画像データ中の注目画素領域が、前記第１、第２の可視強度のいずれによって多重化されたかを判定する判定手段と、
該判定手段の判定結果に基づいて、注目画素領域に対し、前記第１、第２のノイズ除去手段のいずれか一方を選択して多重化されたノイズを除去する制御手段と
を備えることを特徴とする画像処理装置。An image processing apparatus that removes the additional information from multi-valued image data in which noise is reversibly embedded and visible additional information is multiplexed,
First noise removing means for removing noise multiplexed with a first visible intensity;
Second noise removing means for removing noise multiplexed with a second visible intensity different from the first visible intensity;
Input means for inputting, as the additional information, information indicating which of the first and second visible intensities is multiplexed in a predetermined pixel area unit;
Determination means for determining, based on the additional information, whether the pixel region of interest in the multi-valued image data is multiplexed by the first or second visible intensity;
Control means for selecting one of the first and second noise removing means for the target pixel region based on the determination result of the determining means and removing multiplexed noise. An image processing apparatus. 多値画像データにノイズを多重化し、ノイズを多重化した分布による目視可能な付加情報を埋め込む画像処理方法であって、
第１の可視強度でもってノイズを多重化する第１のノイズ多重化工程と、
前記第１の可視強度とは異なる第２の可視強度でもってノイズを多重化する第２のノイズ多重化工程と、
所定の画素領域単位に、前記第１、第２の可視強度のいずれで多重化するかを示す情報を、前記付加情報として入力する入力工程と、
前記付加情報に基づき、多値画像データ中の注目画素領域が、前記第１、第２の可視強度のいずれで多重化すべきかを判定する判定工程と、
該判定工程の判定結果に基づいて、注目画素領域に対し、前記第１、第２のノイズ多重化工程のいずれか一方を選択してノイズ多重化を行わせる制御工程と
を備えることを特徴とする画像処理方法。An image processing method for multiplexing noise in multi-valued image data and embedding visible additional information by a distribution obtained by multiplexing the noise,
A first noise multiplexing step of multiplexing noise with a first visible intensity;
A second noise multiplexing step of multiplexing noise with a second visible intensity different from the first visible intensity;
An input step of inputting, as the additional information, information indicating which of the first and second visible intensities is multiplexed in a predetermined pixel area unit;
A determination step of determining, based on the additional information, whether the pixel region of interest in the multi-valued image data should be multiplexed at the first or second visible intensity;
And a control step of performing noise multiplexing by selecting one of the first and second noise multiplexing steps for the target pixel region based on the determination result of the determination step. Image processing method. ノイズが可逆的に埋め込まれ、目視可能な付加情報が多重化された多値画像データから、前記付加情報を除去する画像処理方法であって、
第１の可視強度でもって多重化されたノイズを除去する第１のノイズ除去工程と、
前記第１の可視強度とは異なる第２の可視強度でもって多重化されたノイズを除去する第２のノイズ除去工程と、
所定の画素領域単位に、前記第１、第２の可視強度のいずれで多重化されたかを示す情報を、前記付加情報として入力する入力工程と、
前記付加情報に基づき、多値画像データ中の注目画素領域が、前記第１、第２の可視強度のいずれによって多重化されたかを判定する判定工程と、
該判定工程の判定結果に基づいて、注目画素領域に対し、前記第１、第２のノイズ除去手段のいずれか一方を選択して多重化されたノイズを除去する制御工程と
を備えることを特徴とする画像処理方法。An image processing method for removing the additional information from multi-value image data in which noise is reversibly embedded and visible additional information is multiplexed,
A first denoising step of removing the multiplexed noise with a first visible intensity;
A second noise removal step of removing noise multiplexed with a second visible intensity different from the first visible intensity;
An input step of inputting, as the additional information, information indicating which of the first and second visible intensities is multiplexed in a predetermined pixel area unit;
A determination step of determining, based on the additional information, whether the pixel region of interest in the multi-valued image data is multiplexed by the first or second visible intensity;
And a control step of removing multiplexed noise by selecting one of the first and second noise removing means for the target pixel region based on the determination result of the determining step. An image processing method. 請求項１乃至９の何れか１項に記載の画像処理装置の機能をコンピュータに実現させるためのコンピュータプログラム。  A computer program for causing a computer to realize the functions of the image processing apparatus according to any one of claims 1 to 9. 請求項１２に記載のコンピュータプログラムを格納したことを特徴とするコンピュータ可読記憶媒体。  A computer-readable storage medium storing the computer program according to claim 12.
JP2002191133A 2002-06-28 2002-06-28 Image processing apparatus and method, computer program, and computer-readable storage medium Expired - Fee Related JP3919613B2 (en)

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Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8049933B2 (en) 2003-09-17 2011-11-01 Canon Kabushiki Kaisha Copy-forgery-inhibited pattern image generation method and image processing apparatus
US20050058476A1 (en) 2003-09-17 2005-03-17 Canon Kabushiki Kaisha Copy-forgery-inhibited pattern density parameter determination method, copy-forgery-inhibited pattern image generation method, and image processing apparatus
JP4428036B2 (en) * 2003-12-02 2010-03-10 ソニー株式会社 Information processing apparatus and method, program, information processing system and method
US8279232B2 (en) * 2007-06-15 2012-10-02 Ricoh Co., Ltd. Full framebuffer for electronic paper displays
US8913000B2 (en) * 2007-06-15 2014-12-16 Ricoh Co., Ltd. Video playback on electronic paper displays
US8416197B2 (en) * 2007-06-15 2013-04-09 Ricoh Co., Ltd Pen tracking and low latency display updates on electronic paper displays
US8319766B2 (en) * 2007-06-15 2012-11-27 Ricoh Co., Ltd. Spatially masked update for electronic paper displays
US8355018B2 (en) * 2007-06-15 2013-01-15 Ricoh Co., Ltd. Independent pixel waveforms for updating electronic paper displays
US8203547B2 (en) * 2007-06-15 2012-06-19 Ricoh Co. Ltd Video playback on electronic paper displays
JP5346933B2 (en) * 2008-06-04 2013-11-20 パナソニック株式会社 Encryption apparatus and encryption system
JP5046047B2 (en) * 2008-10-28 2012-10-10 セイコーインスツル株式会社 Image processing apparatus and image processing program
BR102014007666B1 (en) * 2014-03-28 2023-01-10 Samsung Eletrônica Da Amazônia Ltda METHOD FOR AUTHENTICING MOBILE TRANSACTIONS USING VIDEO ENCRYPTION AND METHOD FOR VIDEO ENCRYPTION
JP7149514B2 (en) * 2018-06-22 2022-10-07 パナソニックＩｐマネジメント株式会社 Imaging device and video output method
CN115885308A (en) 2020-08-27 2023-03-31 松下电器（美国）知识产权公司 Image processing device, machine learning model training method, recognition device, and image processing method
CN115439702B (en) * 2022-11-08 2023-03-24 武昌理工学院 Weak noise image classification method based on frequency domain processing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611607B1 (en) * 1993-11-18 2003-08-26 Digimarc Corporation Integrating digital watermarks in multimedia content
JP3434088B2 (en) 1995-01-17 2003-08-04 日本電信電話株式会社 Image data conversion device and its inverse conversion device
US5530759A (en) 1995-02-01 1996-06-25 International Business Machines Corporation Color correct digital watermarking of images
US6233347B1 (en) * 1998-05-21 2001-05-15 Massachusetts Institute Of Technology System method, and product for information embedding using an ensemble of non-intersecting embedding generators
US6154571A (en) * 1998-06-24 2000-11-28 Nec Research Institute, Inc. Robust digital watermarking
JP3748495B2 (en) 1998-12-11 2006-02-22 キヤノン株式会社 Image processing method, image processing apparatus, image distribution system, and storage medium
US6801636B2 (en) * 2000-01-31 2004-10-05 Canon Kabushiki Kaisha Image processing apparatus and method, and storage medium
JP4218920B2 (en) * 2000-04-07 2009-02-04 キヤノン株式会社 Image processing apparatus, image processing method, and storage medium
US6996248B2 (en) * 2001-06-13 2006-02-07 Qualcomm, Incorporated Apparatus and method for watermarking a digital image

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